Question # 1

To hear a clear echo, the reflecting surface must be at a minimum distance of

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10 m

16.5 m

33 m

66 m

The weight 'mg' of the bob is resolved into

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one component

two components

three components

four components

The expression for restoring force is

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F=ma

F=kx

F= -kx

Kx=ma

The maximum displacement of a body on either side of its equilibrium position is called

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frequency

amplitude

displacement

time period

The vibratory or oscillatory motion of a body is

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translatory motion

back and forth motion about its mean position

free all motion

circular motion

A second's pendulum is a pendulum whose time period is

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1 second

2 seconds

3 seconds

4 seconds

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

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1 : 2

4 : 1

1 : 4

2 : 1

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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maximum

zero

half of the maximum value

one third of the maximum value

Which one of the following wave motions is transverse:

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Wave motion produced in water when a piece of stone is thrown into it

Pulling of weight hanging vertically with a spiral spring

Both of these

None of these

The temperature at which the speed of sound becomes double as was at 27°C is

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273°C

0°C

927°C

1027°C

In case of mechanical waves, we study the motion of

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a single particle

collection of particle

any one of them

none of them

The waves produced in a microwave oven have wavelength.

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12 mm

12 cm

12 m

12 mm

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

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maximum

zero

half of the maximum value

one third of the maximum value

If the length of a simple pendulum is 0.25 m its time period would be

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1.0 s

2.0 s

3.0 s

4.0 s

Energy is not carried by

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Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

Which of the following medium/media can transmit both transverse and longitudinal waves:

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Solids

Liquids

Gases

All of them

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Physics ECAT Pre Engineering Chapter 8 Waves Online Test MCQs With Answers

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